<html><head><script>functionchangeHost() {
window.location.host = "www.example.com:";
}
</script></head><body><p>This will test the URL canonicalization by assigning a host with an empty port specifier to window.location.host</p><p>Clicking the following button should change the host in the current URL to "www.example.com:". It actually loading is not important -
if you see "www.example.com:0" the test has failed. You should see "www.example.com:"</p><input type="button" value="Click Here" onClick="changeHost();"></body></html>